<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
        private $_id;
	/**
	 * Authenticates a user using the Users data model.
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
                $user = Users::model()->findByAttributes(array('username'=>$this->username));
                if ($user === null) {
                    $this->errorCode = self::ERROR_USERNAME_INVALID;
                } else {
                    if ($user->password !== $user->encrypt($this->password))
                        $this->errorCode = self::ERROR_PASSWORD_INVALID;
                    else {
                        $this->_id = $user->id;
                        if (null === $user->lastvisitDate)
                            $lastLogin = time();
                        else
                            $lastLogin = strtotime($user->lastvisitDate);
                        $this->setState('lastvisitDate', $lastLogin);
                        $this->errorCode = self::ERROR_NONE;
                    }
                }
                return $this->errorCode;
	}
        public function getId() {
            return $this->_id;
        }
        
}